Steel Metallurgy - Principles of Metallurgy

Again with the mAtallurgy Data channel...

Maybe they're trying to combine material and metallurgy into matallurgy?

Whatever portmanteau they're aiming for, their videos are excellent for understanding metals. This one goes over how different metallic ingredients affect the properties of alloy steels, the carbon-iron phase diagram, CTT and TTT graphs (something I haven't seen before, admittedly), hardenability, and ways to strengthen steel.

It's not necessarily written for my students' levels - most of them, anyway - but it's good background understanding for me to have.

Never let a [material scientist] read your romance novel

From Saturday Morning Breakfast Cereal

MaterialsScience2000

I love seeing the crystal grains develop as the acid etches the metal surface. It's just gorgeous.

The eight-and-a-half-minute video above shows the preparation of a few different samples, some of which show crystals large enough to be seen by the human eye as well as a few samples that have been etched through natural processes over time.

MaterialsScience2000 has ten total videos posted, and many of them are worth a watch, including a thorough explanation of the tests being preformed. Check out these, too...

Mohs Scale of Hardness

The Mohs Scale of Hardness isn't my favorite thing in the world. I'm a chemistry guy, and sometimes earth science leaves me cold.

So I totally understand this slightly modified Mohs scale from the FAKE Science tumblr.